Factory fitted accessories• PUMP with single or double circulation electric pump, including one in stand-by with automatic activation in case of an alarm, expansion tank with membrane, manual air bleed valve, safety valve, water drain tap, and pressure gauge. The electric pumps are available in the low and high pressure head versions.• TANK & PUMP with inertial buffer tank, single or double circulation electric pump, including one in stand-by with automatic activation in case of an alarm, expansion tank with membrane, manual air bleed valve, safety valve, water drain tap, and pressure gauge. The electric pumps are available in the low and high pressure head versions.• Buffer tank and/or electric pump antifreeze heater.• Refrigerant circuit high and low pressure gauges.• Digital input for double set-point.• 4-20 mA analogue input for shifting set-point.